CN101453543B - Image processing apparatus - Google Patents
Image processing apparatus Download PDFInfo
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- CN101453543B CN101453543B CN2008101805939A CN200810180593A CN101453543B CN 101453543 B CN101453543 B CN 101453543B CN 2008101805939 A CN2008101805939 A CN 2008101805939A CN 200810180593 A CN200810180593 A CN 200810180593A CN 101453543 B CN101453543 B CN 101453543B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/387—Composing, repositioning or otherwise geometrically modifying originals
- H04N1/3872—Repositioning or masking
- H04N1/3873—Repositioning or masking defined only by a limited number of coordinate points or parameters, e.g. corners, centre; for trimming
- H04N1/3875—Repositioning or masking defined only by a limited number of coordinate points or parameters, e.g. corners, centre; for trimming combined with enlarging or reducing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/41—Bandwidth or redundancy reduction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/46—Colour picture communication systems
- H04N1/64—Systems for the transmission or the storage of the colour picture signal; Details therefor, e.g. coding or decoding means therefor
- H04N1/642—Adapting to different types of images, e.g. characters, graphs, black and white image portions
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Abstract
An image processing apparatus reads out image data stored in an image memory unit, performs size reduction, when the read out image data is color image data, on a plurality of pieces of color component data of the color image data by using different pixel number reducing circuits and different filter circuits, performs size reduction, when the read out image data is monochrome image data, on a plurality of pieces of monochrome image data by using the different pixel number reducing circuits and different filter circuits, and generates reduced-size images for a thumbnail display from the reduced-size image data.
Description
Technical field
The application advocates in Japanese patent application 2007-312754 number priority of proposition on December 3rd, 2007, and quotes its full content at this.
The present invention relates to generate a plurality of downscaled images through dwindling a plurality of view data, and synthetic these downscaled images, generate the image processing apparatus (and image processing method) of having a guide look of display image (so-called thumbnail (thumbnail)).
Background technology
In scanning means, color copy machine and compounding machine [MFP (Multi-FunctionPeripheral)] etc.; Proposed a kind of have be kept at view data in the memory [memory]; Through dwindling the view data of being preserved, in display parts such as display device, carry out the image processing apparatus of the function of breviary demonstration.
Method as downscaled images; Have a kind of to view data; Go up whenever separated pixel [pixel] the removal pixel of stipulating at main scanning direction [mainscanning direction], and method of the pixel that [sub scanning direction] every separated row [line] removal 1 of stipulating is gone on sub scanning direction.But, through removing simply under the situation that pixel dwindles, can produce disappearance in the view data like this, cause the quality of the image that is dwindled bad.
Therefore; To view data; Decision becomes the scope of determined pixel [pixel] (for example 7 * 7 pixels) in length and breadth respectively; Become gazing at pixel [target pixel] and gazing at pixel with this and carry out dwindling after the smoothing [smooth] of this scope center using, keep image quality thus as the neighboring pixel at center.
But when down scaling image data, the treatment circuit [processing circuit] that generally needs to be used to dwindle is handled.About treatment circuit, the situation that in image processing apparatus, has the treatment circuit that treatment circuit that color image data uses and black and white [monochrome] view data use is arranged and in image processing apparatus, only have the situation of coloured image with treatment circuit.Have coloured image with and the image processing apparatus of the treatment circuit used of black and white image, though processing speed is fast, have the high problem of cost [cost].
In addition, in only possessing the image processing apparatus of coloured image, dwindle the black and white image data with treatment circuit, can suppress cost through utilizing coloured image with treatment circuit.This image processing apparatus has corresponding with the RGB composition [component] of color image data respectively 3 treatment circuits [processing circuit].Dwindling under the black and white image data conditions that constitutes by 2 Value Datas, using 1 in these 3 treatment circuits to come downscaled images.
But; Only possess coloured image and carrying out dwindling of 1 black and white image data when handling with the image processing apparatus of treatment circuit; Owing to use 1 in 3 treatment circuits, so no matter be black and white image data or color image data, it is identical to dwindle the needed time.That is, although black and white image data data volume than the lacking of color image data, also need the identical time, thereby the speed of dwindling of black and white image is slow, efficient is low.
Summary of the invention
The purpose of this invention is to provide a kind of quality that can not reduce view data, can shorten the image processing apparatus (and image processing method) of needed time when carrying out the dwindling of black and white image.
According to a preferred embodiment of the invention, have: the image storage unit [image memory unit] that keeps a plurality of view data; Dwindle with a plurality of view data that handle is read from image storage unit; Generating breviary [thumbnail] shows and dwindles processing unit [unit] with image; Dwindling processing unit has: reach and the corresponding filtering circuit [filter circuit] of these pixel counts minimizing circuit but a plurality of pixel counts that executed in parallel is dwindled reduce circuit, when generating the above-mentioned downscaled images of coloured image, to constituting a plurality of colour content data of color image data; Use different pixel minimizing circuit and filtering circuit to dwindle respectively; When generating the downscaled images of black and white image data,, use different pixel to reduce circuit and filtering circuit respectively to a plurality of black and white image data.
In addition, the implication of so-called view data is that 1 view data is called the aggregate of the pixel data of a plurality of pixel data two-dimensional arrangements.In addition, filtering circuit is through to gazing at pixel [target pixel] and be that the neighboring pixel at center multiply by the whole additions of value that coefficient draws with it, and divided by above-mentioned coefficient with, obtain the new value of gazing at pixel.
According to such structure, when downscaled images is used in the breviary demonstration that generates the black and white image data, can use a plurality of pixel counts minimizing circuit and filtering circuit to dwindle a plurality of black and white image data concurrently.Therefore; Owing to can in the time of dwindling 1 black and white image data in the past, dwindle a plurality of black and white image data; So, and compared in the past, can shorten and be used to generate the time that will arrange the breviary display image that forms based on the downscaled images of black and white image data.
According to a preferred embodiment of the invention; Dwindle processing unit and have the image segmentation module; This image segmentation module constitutes and for below the quantity of above-mentioned filtering circuit through 1 black and white image data being divided into by continuous multirow; Generate the different a plurality of black and white image data of cutting apart in position of sub scanning direction, this dwindles the black and white image data after processing unit is cut apart each, uses different pixel minimizing circuit and filtering circuit to dwindle.
What is called is divided into a plurality of black and white image data implications to 1 black and white image data and is; For example when using 3 above-mentioned pixel counts minimizing circuit and filtering circuit to handle 2 black and white image data; Initial black and white image data; 2/3 location from the front end to the sub scanning direction is divided into 2, after the black and white image data be divided into 2 from the location of front end to 1/3.At this moment; With 1/3 mutual regional divided view data combination; Use 1 pixel count minimizing circuit and filtering circuit to dwindle,, use other pixel count minimizing circuit and filtering circuit to dwindle respectively 2 divided view data in 2/3 zone.
In addition; When using 3 above-mentioned pixel counts minimizing circuit and filtering circuit to handle 1 black and white image data; The modes different according to the position on sub scanning direction are divided into 3 with these black and white image data in 1/3 ratio, use other pixel count minimizing circuit and filtering circuit to dwindle these divided view data respectively.
When downscaled images is used in the guide look demonstration that generates a plurality of black and white image data; Have in residue under the black and white image data conditions of remainder quantity; Can cut apart 1 black and white image data by the zone of regulation; To divided black and white image data, use different above-mentioned pixel count minimizing circuit and filtering circuit to dwindle concurrently respectively.As a result, can use a plurality of pixel counts to reduce circuit and filtering circuit expeditiously, generate the downscaled images that breviary shows usefulness.
According to a preferred embodiment of the invention; The image segmentation module is with the mode in the zone [overlap region] that has repetition in divided black and white image data each other; Cut apart 1 black and white image data; Using filtering circuit that each the divided black and white image data that comprises repeat region have been carried out after the filtration treatment, using pixel count to reduce circuit and dwindle, and synthesize 1 black and white image data to the black and white image data of cutting apart after dwindling.
Owing between divided black and white image data, form the zone of repetition; And comprise the filtration treatment of repeat region; So; When having synthesized the black and white image data of being dwindled, cutting apart, in repeat region, can not produce distortion, become identical situation in the time of can making black and white image data after synthetic with the black and white image data of dwindling 1 width of cloth.
According to a preferred embodiment of the invention, on the basis of said structure, has the gradation conversion module [module] that becomes the black and white image data transaction [transform] that constitutes by 2 Value Datas [bi-level image data] gray scale [gray scale].
For example, because the black and white image data that facsimile machine receives are 2 value view data, so a plurality of pixel counts that can not use coloured image to use reduce circuit and filtering circuit directly dwindles.Therefore, through converting 2 Value Datas to gray scale,, also can use a plurality of pixel counts minimizing circuit and filtering circuit to dwindle black and white 2 value images even the view data that keeps in the image storage unit is the black and white image of 2 Value Datas.
According to a preferred embodiment of the invention, owing to can in the time of dwindling 1 black and white image data in the past, dwindle a plurality of black and white image data, so, can shorten time of the breviary display image that generates the black and white image data.
Through following detailed description of preferred implementation of the present invention being carried out with reference to accompanying drawing, it is clearer that further feature of the present invention, member, process, step, characteristic and advantage can become.
Description of drawings
Fig. 1 is the block diagram of the structure of the compounding machine [Multi-FunctionPeripheral (MFP)] that relates to of expression the preferred embodiments of the present invention.
Fig. 2 be the expression compounding machine be used to generate the breviary display image function one the example block diagram.
Fig. 3 is the figure of the state of the view data of explanation when dwindling color image data by each RGB compositional data.
Fig. 4 is the figure of the state of the view data of explanation when dwindling the black and white image data page.
Fig. 5 is the block diagram of other structures of dwindling processing unit of the compounding machine of expression other preferred embodiments of the present invention.
Fig. 6 be with 2 pages of black and white image data respectively two cut apart the view data when dwindling key diagram.
Fig. 7 is a key diagram of 1 page of black and white image data three being cut apart the view data when dwindling.
Embodiment
Fig. 1 is the block diagram of structure of the image processing apparatus of expression the preferred embodiments of the present invention, as an example of image processing apparatus, has represented compounding machine 1.This compounding machine 1 has: by the control unit 10 of microprocessing unit (MPU) formation; The read-only memory (ROM) 12 that is connected with this control unit 10 respectively through parallel bus [parallel bus] 11; Random-access memory (ram) 13; Original reading unit [document scanning unit] 14; Graphics processing unit 15; Coder-decoder (CODEC) 16; Video memory [image memory] 17; Print unit [printingunit] 18; Operating unit [operation unit] 19; Report unit [informing unit] 20; Communication unit [communication unit] 21; And frame memory [frame memory] 22.
In this compounding machine 1, select any one of fax pattern [facsimile mode], copy mode [copymode], scan pattern [scanner mode] and printing model [printer mode], carry out and selected pattern corresponding processing.
Under the fax pattern, send to other picture units to the view data of the original copy that reads.And, be printed on image with on the paper based on the facsimile image data that receives from other picture units (below, be called the FAX view data).In addition, can be kept at this FAX view data that receives in the video memory 17.And the FAX view data is black and white 2 value view data, is being compressed with Modified Huffman (MH) mode or is being compressed with Modified READ (MR) mode or received under the state that compresses with Modified MR (MMR) mode.This compressed FAX view data is stored in the video memory 17.
Under copy mode, be printed on image with on the paper based on the original image data that read.Under printing model, can be printed on the image that receives from the terminal installation that is connected with network with on the paper based on page or leaf record language [page description language (PDL)].The PDL that receives from this terminal installation also can be kept at the video memory 17.The view data that is generated by PDL of this moment is color image data or black and white image data.
Color image data is the color image data that generates of the pixel data that utilizes intensity [intensity] data by the colour content of each RGB to constitute (below be called the RGB color image data), or the view data of compressing with Joint Photographic Experts Group (JPEG) mode (below be called the jpeg image data).In addition, the black and white image data are gray level image data or jpeg image data that black and white 2 value view data (not only have only black and white, but also comprise other monochrome) or the pixel data that utilizes the intensity data by gray component to constitute generate.
Under scan pattern, send to the terminal installation [terminal device] that is connected with network to the original image data that read, or be kept at the view data that reads in the video memory 17.The view data that under scan pattern, reads also is the jpeg image data of RGB color image data or colour or black and white or 2 value view data of black and white.
In ROM12, preserve the performed computer program of control unit 10, the program implementation according to control part 10 is stored in data necessary among the RAM13.Original reading unit 14 utilizes photo-electric conversion element [photoelectric transducer] to receive the reverberation from original copy to the original copy irradiates light, exports the signal corresponding with its light income.
CODEC16 is stored in the Image Data Compression [compress] from graphics processing unit 15 input in the video memory 17 to the view data after compressing, or from video memory 17, read compressed view data, [expand] decompresses.
When carrying out facsimile transmission, and the picture unit of target between connect through the common communication circuit after, utilize communication unit 21 to send to the view data of the original copy that reads by original reading unit 14 the other side's picture unit.On the other hand, when faxing reception, pass through the picture unit reception FAX view data of common communication circuit by communication unit 21, and be stored in the video memory 17 from the other side.The FAX view data that is stored in the video memory 17 is read from this video memory 17, is decompressed by CODEC16.The image of the view data that contracts based on being extracted is printed to on the paper by print unit 18.
In addition, communication unit 21 is controlled the input and output to the signal of LAN through interface when carrying out the transmitting-receiving of view data by LAN.For example, under scan pattern, send to the view data of the original copy that reads by original document reading apparatus 14 in the other-end device that is connected with LAN through interface.In addition, under printing model, according to through interface from the PDL that the other-end device that is connected with LAN receives, be printed on image with on the paper by print unit 18.
The thumbnail image that 22 pairs of frame memories have been arranged a plurality of downscaled images that generated by graphics processing unit 15 stores.The thumbnail image that stores in the frame memory 22 is displayed on the display 20a that reports unit 20.
Fig. 2 is the functional block diagram that is illustrated in an example of the structure that is used to generate thumbnail image in the compounding machine 1.In compounding machine 1, use a plurality of view data that are stored in the video memory 17 to generate thumbnail image.
In video memory 17, the file below setting up.
(1) can store the black and white image file 31 of not compressed black and white 2 value view data;
(2) can store the black and white 2 value compressed image files folder 32 of black and white 2 value compressing image datas such as FAX view data;
(3) can store the jpeg image file folder 33 of the jpeg image data of colour or gray scale;
(4) can store the RGB color document image folder 34 of RGB color image data;
(5) can store the gray level image file 35 of gray level image data.
CODEC16 has black and white compressed image decompression module [module] 41 and jpeg image decompression module 42.The black and white 2 value compressing image datas that 41 pairs of FAX view data of black and white compressed image decompression module etc. are stored in compressed state in the black and white 2 value compressed image files folder 32 of video memory 17 decompress.In black and white compressed image decompression module 41, will restore with the black and white 2 value view data that MH mode, MR mode or MMR mode are compressed.
The jpeg image data that store in the jpeg image file folder 33 of 42 pairs of video memories 17 of jpeg image decompression module decompress.In jpeg image decompression module 42; When with the jpeg image data decompression, at first, carry out by each unit area (block) process of decoding and the processing that decoded a plurality of zones are synthetic; Through synthetic zone, the view data that can obtain is extracted contracts.Then, the black and white 2 value view data or the color image data that contract being extracted are stored among the RAM13.
The black and white of not implemented decompression 2 value view data that store in the black and white image file 31 and black and white 2 value view data, gray level image data and the color image datas that decompress by CODEC16; YCbCr data as being made up of brightness [luminance] composition (Y) and aberration [colordifference] composition (Cb and Cr) are stored among the RAM13.
In addition, writing in the method for color image data, following method is being arranged to RAM13.
(1) by each YCbCr composition, individual element ground order is written among the RAM13;
(2) be written to the YCbCr composition among the RAM13 page by page;
(3) be written to the YCbCr composition among the RAM13 line by line.
And graphics processing unit 15 has RGB modular converter 51, gradation conversion module 52, dwindles processing module 53, downscaled images memory 54, breviary display image synthesis module the 55, the 1st switch [switch] 56 and the 2nd switch 57.RGB modular converter 51 converts the color image data of the YCbCr data that store among the RAM13 to pixel data that the intensity data by each colour content of RGB constitutes.Gradation conversion module 52 converts the gray level image data of the YCbCr data that store among the RAM13 pixel data of gray scale to according to brightness composition (Y).
Dwindle processing module 53 and have the R composition filtering circuit 531 that carries out filtration treatment, G composition filtering circuit 532 and the B composition filtering circuit 533 that is used for smoothing.In addition, dwindle corresponding each filtering circuits of processing module 53, have that the R composition pixel count that each view data that is filtered after the processing is dwindled reduces circuit 534, G composition pixel count reduces circuit 535 and B composition pixel count reduces circuit 536.These filtering circuits and pixel count reduce circuit when the breviary that generates the RGB color image data use downscaled images and the breviary of generation gray level image data when using downscaled images, carry out different processing.
Below, in conjunction with Fig. 3, to describing by the situation of the breviary that dwindles processing module 53 generation RGB color image datas with downscaled images.R composition filtering circuit 531 reduces in the circuit 534 with R composition pixel count, after the R compositional data ((a) among Fig. 3) of 1 RGB color image data has been implemented filtration treatment, dwindles this R compositional data, generates the downscaled images ((d) among Fig. 3) of R compositional data.
G composition filtering circuit 532 reduces in the circuit 535 with G composition pixel count, after the G compositional data ((b) among Fig. 3) of 1 RGB color image data has been implemented filtration treatment, dwindles this G compositional data, generates the downscaled images ((e) among Fig. 3) of G compositional data.
B composition filtering circuit 533 reduces in the circuit 536 with B composition pixel count, after the B compositional data ((c) among Fig. 3) of 1 RGB color image data has been implemented filtration treatment, dwindles this B compositional data, generates the downscaled images ((f) among Fig. 3) of B compositional data.
Below, in conjunction with Fig. 4, to showing that by the breviary that dwindles processing module 53 generation gray level image data the situation with downscaled images describes.Reduce in the circuit 534 at R composition filtering circuit 531 and R composition pixel count, after the gray level image data ((a) among Fig. 4) of the 1st page (the 1st frame) have been implemented filtration treatment, dwindle this gray level image data, generate the 1st black and white downscaled images ((d) among Fig. 4).
G composition filtering circuit 532 reduces in the circuit 535 with G composition pixel count; To reduced the gray level image data after circuit 534 is handled by R composition filtering circuit 531 and R composition pixel count; Then after the gray level image data ((b) Fig. 4) of the 2nd page (the 2nd frame) of RAM13 output are implemented filtration treatment; Dwindle this gray level image data, generate the 2nd black and white downscaled images ((e) among Fig. 4).
B composition filtering circuit 533 reduces in the circuit 536 with B composition pixel count; To reduced the gray level image data ((b) among Fig. 4) after circuit 535 is handled by G composition filtering circuit 532 and G composition pixel count; Then after the gray level image data ((c) Fig. 4) of the 3rd page (the 3rd frame) of RAM13 output are implemented filtration treatment; Dwindle this gray level image data, generate the 3rd black and white downscaled images ((f) among Fig. 4).These each filtering circuits and pixel count reduce dwindling of circuit, are carried out concurrently.
In addition, be after each view data having been carried out RGB conversion or gradation conversion, carry out filtration treatment and dwindle processing, but also can before carry out RGB conversion or gradation conversion, carry out filtration treatment and dwindle processing, then, carry out RGB conversion or gradation conversion.
Being dwindled the downscaled images that processing module 53 dwindles is stored in the downscaled images memory 54 by order.Then, by thumbnail image synthesis module 55 that these downscaled images are synthetic when in this downscaled images memory 54, having stored the downscaled images of 1 frame breviary demonstration number, thus be presented at a plurality of downscaled images breviaries in 1 frame.
The breviary that in downscaled images memory 54, stores the RGB color image data shows when using downscaled images, at first, synthesizes each compositional data that is reduced the circuit generation by each pixel count, generates 1 colored downscaled images.In addition; When in downscaled images memory 54; When storing the downscaled images of gray level image data, order stores and reduces circuit 534 by R composition pixel count and implemented to dwindle the 1st black and white downscaled images of processing, reduced circuit 535 by G composition pixel count and implemented to dwindle the 2nd black and white downscaled images of processing, reduced the 3rd black and white downscaled images that circuit 536 has implemented to dwindle processing by B composition pixel count.
Then, thumbnail image synthesis module 55 is by dwindling a plurality of downscaled images in the downscaled images memory 54 that are stored in that processing module 53 generates, and is synthetic carrying out the mode that breviary shows by the order of regulation, generates the breviary display image.
The breviary display image that is generated by breviary display image synthesis module 55, the breviary display image that for example is made up of the downscaled images of color image data, the breviary display image that is made up of the downscaled images of black and white image data are stored in the frame memory 22.Then, from frame memory 22, read the breviary display image, and be presented on the display 20a that constitutes by LCD.In addition, the breviary display image also can be the thumbnail image that the downscaled images by the downscaled images of color image data and black and white image data constitutes.
The 1st switch 56 is according to the kind from the view data of RAM13 output, switches arbitrarily between importing 563 seeing the 1st input 561 of gray level image data off, see the 2nd input 562 of black and white 2 value view data off and see the 3rd of color image data off.
The 2nd switch 57 is to dwindle processing module 53 to the view data that stores in the RGB color document image of video memory 17 folder 34 or the gray level image file 35 is outputed to; Or a view data from RAM13 output outputs to the processing module portion 53 that dwindles, the switch that switches.
In addition,, see the data of 24 bits off, to gradation conversion module 52, see the data of 3 bits off,, see the data of 24 bits off from the 3rd input part 563 to RGB converter sections 51 from the 2nd input part 562 from the 1st input part 561 to the 2nd switchs 57.And, from RGB modular converter 51 and gradation conversion module 52 to the 2nd switchs 57, see the data of 24 bits off, to each filtering circuit that dwindles processing module 53, export the data of 8 bits from the 2nd switch 57 respectively.
And; If make the 1st input 561 become input state to the 1st switch 56; And the 2nd switch 57 is become the view data from RAM13 is input to the state that dwindles in the processing module 53; Then from RAM13 to the 1st the input 561 output gray level view data, these gray level image data are outputed in any filtering circuit that dwindles processing module 53.
In addition, if make the 2nd input 562 become input state, and the 2nd switch 57 is become be input to the state that dwindles in the handling part 53 to a view data, then see black and white 2 value view data off to the 2nd input 562 from RAM13 from RAM13 to the 1st switch 56.And after these black and white 2 value view data converted the gray level image data into by gradation conversion portion 52, these gray level image data were outputed in any filtering circuit that dwindles handling part 53.
In addition; If make the 3rd input part 563 become input state to the 1st switch 56; And the 2nd switch 57 is become being input to the state that dwindles in the handling part 53 from the view data of RAM13, then from RAM13 to the colored jpeg image data of the 3rd input part 563 outputs.And colored jpeg image data are outputed to and are dwindled in the handling part 53 after converting the RGB color image data into by RGB converter section 51.
In addition; The 2nd switch 57 is become when video memory 17 is input to the state that dwindles the processing module 53 to view data, irrespectively outputing to the RGB color image data of video memory 17 or gray level image data with the switching state of the 1st switch 56 and dwindle in the processing module 53.
When the breviary display image of the downscaled images that generates the black and white image data; 1 filtering circuit and the pixel count that use each filtering circuit and the pixel count of RGB composition to reduce in the circuit reduce circuit, generate the black and white image data of 1 frame the downscaled images of breviary demonstration usefulness.As a result, can reduce circuit parallel by 3 filtering circuits and pixel count and generate the downscaled images that 3 black and white breviaries show usefulness.And, under the situation of the breviary display image that generates the black and white image data, compare with the situation of the breviary display image that generates color image data, can to generate the downscaled images of breviary demonstration usefulness with about 1/3 times institute the time.
Other preferred embodiment
In the above embodiments, show that sum with the black and white image data of downscaled images is not under the situation of 3 integral multiple, needs to use R composition filtering circuit 531 and 534 in circuit of R composition pixel count minimizing dwindle last black and white image data generating breviary.Perhaps, need to use R composition filtering circuit 531 and R composition pixel count to reduce circuit 534 and G composition filtering circuit 532 and G composition pixel count minimizing circuit 535 and dwindle 2 last view data.In these cases, exist the filtering circuit and the pixel count that do not have to use and reduce circuit.
Therefore,, also use whole 3 filtering circuits and pixel count to reduce circuit, come high efficiency to dwindle dwindling under last 1 black and white image data or last 2 the black and white image data conditions.That is, be divided into 2 or 3 black and white image data to 1 black and white image data, use 3 filtering circuits and pixel count to reduce circuit and come to dwindle respectively.
In the present embodiment, the such formation of block diagram as shown in Figure 5 is dwindled processing module 53.Promptly; Dwindle processing module 53 and not only have R composition filtering circuit 531 and R composition pixel count minimizing circuit 534, G composition filtering circuit 532 and G composition pixel count minimizing circuit 535, B composition filtering circuit 533 and B composition pixel count minimizing circuit 536, and have image segmentation module the 537, the 3rd switch 538 and the 4th switch 539.Before R composition filtering circuit 531, G composition filtering circuit 532, B composition filtering circuit 533, be set up in parallel the 3rd switch the 538, the 4th switch 539, and between the 4th switch 539 and each filtering circuit, image segmentation module 537 be set.
Through cutting off the 3rd switch 538, open the 4th switch 539, can deliver to 1 black and white image data among any of 3 filtering circuits.In addition,, can deliver to image segmentation module 537 to 1 black and white image data, after being divided into 2 or 3, output to divided divided image data among any of 3 filtering circuits through opening the 3rd switch 538, cutting off the 4th switch 539.
In this image segmentation module 537, can be divided into 2 or 3 to 1 black and white image data.For example; Show that total page number with the black and white image data of downscaled images is not 3 multiple, last 2 pages black and white image data are dwindled under the situation of processing generating breviary; That kind as shown in Figure 6; For the 1st page the black and white image data ((a) among Fig. 6) in 2 black and white image data, it two is divided into the 1st divided image data 61 that becomes 2/3 zone from last to sub scanning direction and the 2nd divided image data 62 that becomes 1/3 below it zone.In addition, to the 2nd page black and white image data ((b) among Fig. 6), it two is divided into the 3rd divided image data 63 that becomes 1/3 zone from last to sub scanning direction and the 4th divided image data 64 that becomes 2/3 below it zone.
Then; Utilize R composition filtering circuit 531 and R composition pixel count to reduce circuit 534 and dwindle the 1st divided image data 61; Utilize G composition filtering circuit 532 and G composition pixel count to reduce circuit 535 and dwindle the 2nd divided image data 62 and the 3rd divided image data 63, utilize B composition filtering circuit 533 and B composition pixel count to reduce circuit 536 and dwindle the 4th divided image data 64.
In addition, under the situation of utilizing G composition filtering circuit 532 and G composition pixel count minimizing circuit 535 to dwindle, at first, after having dwindled the 2nd divided image data 62, dwindle the 3rd divided image data 63.Dwindled each the zone 61～64 after, as (c) among Fig. 6 (d) shown in, synthesize 2 pages original state to each divided image data after dwindling.
In addition; Only dwindling under the last 1 page black and white image data conditions; Shown in (a) among Fig. 7,1 black and white image data from last to branches such as sub scanning direction be divided into the 1st divided image data the 71, the 2nd divided image data 72 and the 3rd divided image data 73.
Then; Utilize R composition filtering circuit 531 and R composition pixel count to reduce circuit 534 and dwindle the 1st divided image data 71; Utilize G composition filtering circuit 532 and G composition pixel count to reduce circuit 535 and dwindle the 2nd divided image data 72, utilize B composition filtering circuit 533 and B composition pixel count to reduce circuit 536 and dwindle the 3rd divided image data 73.
After having dwindled each divided image data, shown in (b) among Fig. 7, synthesize 1 page original state to each divided image data that dwindles.And; No matter be view data have been carried out 2 cut apart or 3 situation about cutting apart; All after being stored into the black and white downscaled images that synthesizes 1 page in the downscaled images memory 54, in breviary display image synthesis module 55, synthetic with the black and white downscaled images that is so far generated.
In addition, when cutting apart the black and white image data, such shown in dotted line among Fig. 6 and Fig. 7, in image segmentation portion 537, each divided image data has the zone of repetition in the joint portion that is combined separately.
For example; Be divided into 1/2 to the black and white image data of 1 page of 1000 row; Utilize the filter of 7 * 7 pixels to come under the situation of image data processing; Be set at the scope that the 1st row～the 503 is gone to the scope of the divided image data on top, be set at the 498th row～the 1000 row to the scope of the divided image data of bottom.In this case, the 498th row～the 503 row becomes repeat region.And, for the divided image data of top, carry out filtration treatment to the pixel of the 1st row～the 500 row, for the divided image data of bottom, carry out filtration treatment to the pixel of the 501st row～the 1000 row.For example, carrying out 1 pixel of the 500th row under the situation of filtration treatment as gazing at pixel, filtering circuit is handled 49 pixels of the 498th row～the 503 row.
According to above-mentioned processing; Not under the situation of 3 integral multiple at the sum of the black and white image data that constitute the breviary display image; Owing to cut apart the black and white image data of remainder; High efficiency uses 3 filtering circuits and pixel count to reduce circuit, so can further shorten the time of breviary demonstration with downscaled images that generates.
And; Because each divided image data forms the zone of repetition in the joint portion; The filtration treatment that comprises repeat region; So, when to dwindled cut apart the black and white image data and synthesize the time can not appear at the disappearance of the image at place, joint portion, can make black and white image data after synthetic become state identical when the black and white image data of 1 width of cloth having been carried out dwindle processing.
In above-mentioned execution mode, will become gray scale by the black and white image data transaction that 2 Value Datas constitute, but also can after converting monochromatic view data to multi-value data, dwindle processing the view data of monochrome.And, show about the breviary of downscaled images, can in this image processing apparatus, carry out, also can in being located at outside personal computer (PC), carry out.
Though described the present invention with reference to preferred implementation; But can improve the present invention with several different methods; And can know the numerous embodiments different with the execution mode of top proposition and description by inference, this is conspicuous as far as those skilled in the art.Therefore, the appended claim book be intended to contain of the present invention all fall into the improvement project in purport of the present invention and the scope.
Claims (4)
1. image processing apparatus is characterized in that having:
The image storage unit that keeps a plurality of view data; With
Dwindle a plurality of view data of reading, generate breviary and show the processing unit that dwindles with downscaled images from image storage unit;
Dwindling processing unit has: reduce circuit and B composition pixel count and reduce circuit and R composition filtering circuit, G composition filtering circuit and B composition filtering circuit corresponding with these pixel counts minimizing circuit, after being configured in but executed in parallel R composition pixel count that dwindle, before being configured in reduces circuit, G composition pixel count
When generating the downscaled images of coloured image; To constituting R, G, the B colour content data of color image data; Using said R composition pixel count minimizing circuit, said G composition pixel count to reduce circuit and said B composition pixel count minimizing circuit and said R composition filtering circuit, said G composition filtering circuit and said B composition filtering circuit respectively concurrently handles
When generating the downscaled images of black and white image data; To a plurality of black and white image data; Using different said R composition pixel count minimizing circuit, said G composition pixel count to reduce circuit and said B composition pixel count minimizing circuit and said R composition filtering circuit, said G composition filtering circuit and said B composition filtering circuit respectively concurrently handles
Wherein, Said R composition pixel count reduces circuit, said G composition pixel count reduces circuit and said B composition pixel count minimizing circuit dwindles processing, and said R composition filtering circuit, said G composition filtering circuit and said B composition filtering circuit carry out smoothing to be handled.
2. image processing apparatus according to claim 1 is characterized in that,
Dwindle processing unit and have the image segmentation unit; This image segmentation unit constitutes and for below the quantity of filtering circuit through 1 black and white image data being divided into by continuous multirow; Generate and to cut apart the black and white image data below the quantity of the different said filtering circuit in the position of sub scanning direction
To respectively cutting apart the black and white image data, use different pixel minimizing circuit and filtering circuit to dwindle concurrently.
3. image processing apparatus according to claim 2 is characterized in that,
1 black and white image data is cut apart to cut apart the mode that the black and white image data have the zone of repetition each other in the image segmentation unit,
Dwindling processing unit states filtering circuit in the use and has carried out after the filtration treatment to the above-mentioned black and white image data of respectively cutting apart that comprise repeat region; Use pixel count to reduce circuit and dwindle, and synthesize 1 black and white image data to the black and white image data of cutting apart after dwindling.
4. image processing apparatus according to claim 1 is characterized in that,
Has the gradation conversion unit that will become the gray level image data by the black and white image data transaction that 2 Value Datas constitute.
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| JP2007312754A JP2009141430A (en) | 2007-12-03 | 2007-12-03 | Image processor |
| JP2007-312754 | 2007-12-03 | ||
| JP2007312754 | 2007-12-03 |
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| JP4367516B2 (en) * | 2007-04-20 | 2009-11-18 | 村田機械株式会社 | Image processing device |
| JP4922190B2 (en) * | 2008-01-04 | 2012-04-25 | 株式会社リコー | Image forming apparatus and image forming method |
| CN102129702B (en) * | 2010-01-12 | 2013-07-03 | 北大方正集团有限公司 | Image thumbnail making method and system thereof |
| JP2014197740A (en) | 2013-03-29 | 2014-10-16 | セイコーエプソン株式会社 | Print control device and print control program |
| JP6251029B2 (en) | 2013-12-12 | 2017-12-20 | キヤノン株式会社 | Control device, image processing device, control method, and program |
| EP3665620A4 (en) * | 2017-08-07 | 2021-04-21 | Imago Systems, Inc. | System and method for the visualization and characterization of objects in images |
| US11470287B2 (en) * | 2019-12-05 | 2022-10-11 | Samsung Electronics Co., Ltd. | Color imaging apparatus using monochrome sensors for mobile devices |
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| JP2003346143A (en) * | 2002-05-29 | 2003-12-05 | Fuji Photo Film Co Ltd | Image processing method and image processing program |
| CN1489760A (en) * | 2000-12-12 | 2004-04-14 | 夏普公司 | Method and system for improving display resolution in images using sub-pixel sampling and visual error filtering |
| CN1925544A (en) * | 2005-08-31 | 2007-03-07 | 松下电器产业株式会社 | Image data processing device |
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| JP3849326B2 (en) * | 1998-11-12 | 2006-11-22 | コニカミノルタビジネステクノロジーズ株式会社 | Image processing device |
| JP4683654B2 (en) * | 2006-07-07 | 2011-05-18 | キヤノン株式会社 | Image processing apparatus, image processing apparatus control method, and program |
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| CN1489760A (en) * | 2000-12-12 | 2004-04-14 | 夏普公司 | Method and system for improving display resolution in images using sub-pixel sampling and visual error filtering |
| JP2003346143A (en) * | 2002-05-29 | 2003-12-05 | Fuji Photo Film Co Ltd | Image processing method and image processing program |
| CN1925544A (en) * | 2005-08-31 | 2007-03-07 | 松下电器产业株式会社 | Image data processing device |
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